视频连线

frontend/src/pages/cloud-law/video-call.vue

@@ -95,7 +95,7 @@
         </view>
 
         <view class="controls-row controls-row-bottom">
-          <view class="control-item" @click="takeSnapshot">
+          <view class="control-item" @click="takeSnapshot" @tap="takeSnapshot">
             <view class="control-btn dark-btn text-icon-btn">
               <image v-if="!captureIconError" class="control-image" :src="captureIcon" mode="aspectFit" @error="captureIconError = true"></image>
               <text v-else class="text-icon">截</text>
@@ -121,6 +121,17 @@
       </view>
 
     </view>
+
+    <view v-if="snapshotPreviewUrl" class="snapshot-preview-mask" @click="closeSnapshotPreview">
+      <view class="snapshot-preview-panel" @click.stop>
+        <image class="snapshot-preview-image" :src="snapshotPreviewUrl" mode="aspectFit"></image>
+        <text class="snapshot-preview-tip">手机端请长按图片保存，电脑端可点击下载图片</text>
+        <view class="snapshot-preview-actions">
+          <button class="snapshot-preview-btn" @click="downloadSnapshotPreview">下载图片</button>
+          <button class="snapshot-preview-btn secondary" @click="closeSnapshotPreview">关闭</button>
+        </view>
+      </view>
+    </view>
   </view>
 </template>
 
@@ -176,6 +187,8 @@ const captureIcon = '/static/capture.png'
 const flipCameraIcon = '/static/camera.png'
 const captureIconError = ref(false)
 const flipCameraIconError = ref(false)
+const snapshotPreviewUrl = ref('')
+const snapshotBusy = ref(false)
 
 const digitsOf = (value) => String(value || '').replace(/\D/g, '').slice(0, 9)
 const sameUser = (a, b) => String(a || '') === String(b || '')
@@ -448,10 +461,62 @@ const toggleSpeaker = () => {
   setSpeakerMuted(!speakerMuted.value)
 }
 
+const isMobileSnapshotBrowser = () => {
+  // #ifdef H5
+  const ua = navigator?.userAgent || ''
+  return /Android|iPhone|iPad|iPod|Mobile|MicroMessenger/i.test(ua)
+  // #endif
+  // #ifndef H5
+  return false
+  // #endif
+}
+
+const findSnapshotVideo = () => {
+  // #ifdef H5
+  const selectors = [
+    '.cloud-law-call .main-video video',
+    '.cloud-law-call .remote-stage video',
+    '.cloud-law-call video'
+  ]
+  for (const selector of selectors) {
+    const list = Array.from(document.querySelectorAll(selector))
+    const video = list.find(el => el && el.videoWidth && el.videoHeight && el.readyState >= 2)
+    if (video) return video
+  }
+  // #endif
+  return null
+}
+
+const downloadSnapshotDataUrl = (dataUrl) => {
+  // #ifdef H5
+  const a = document.createElement('a')
+  a.href = dataUrl
+  a.download = `cloud-law-video-${Date.now()}.png`
+  document.body.appendChild(a)
+  a.click()
+  document.body.removeChild(a)
+  // #endif
+}
+
+const closeSnapshotPreview = () => {
+  snapshotPreviewUrl.value = ''
+}
+
+const downloadSnapshotPreview = () => {
+  if (!snapshotPreviewUrl.value) return
+  downloadSnapshotDataUrl(snapshotPreviewUrl.value)
+  uni.showToast({ title: isMobileSnapshotBrowser() ? '如未下载，请长按图片保存' : '截屏已下载', icon: 'none' })
+}
+
 const takeSnapshot = () => {
+  if (snapshotBusy.value) return
+  snapshotBusy.value = true
+  setTimeout(() => {
+    snapshotBusy.value = false
+  }, 600)
   // #ifdef H5
   try {
-    const video = document.querySelector('.cloud-law-call .main-video video') || document.querySelector('.cloud-law-call video')
+    const video = findSnapshotVideo()
     if (!video || !video.videoWidth || !video.videoHeight) {
       uni.showToast({ title: '当前无视频画面可截屏', icon: 'none' })
       return
@@ -461,18 +526,22 @@ const takeSnapshot = () => {
     canvas.height = video.videoHeight
     const ctx = canvas.getContext('2d')
     ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
-    const a = document.createElement('a')
-    a.href = canvas.toDataURL('image/png')
-    a.download = `cloud-law-video-${Date.now()}.png`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    uni.showToast({ title: '截屏已保存', icon: 'success' })
+    const dataUrl = canvas.toDataURL('image/png')
+    snapshotPreviewUrl.value = dataUrl
+    if (isMobileSnapshotBrowser()) {
+      uni.showToast({ title: '截屏成功，长按图片保存', icon: 'none' })
+    } else {
+      downloadSnapshotDataUrl(dataUrl)
+      uni.showToast({ title: '截屏已下载', icon: 'success' })
+    }
   } catch (err) {
     console.warn('[CloudLawVideoCall] snapshot failed', err)
     uni.showToast({ title: '截屏失败', icon: 'none' })
   }
   // #endif
+  // #ifndef H5
+  uni.showToast({ title: '当前环境暂不支持截屏', icon: 'none' })
+  // #endif
 }
 
 const flipCameraByCommand = async (value) => {
@@ -1100,6 +1169,61 @@ onUnload(() => {
 .loading {
   opacity: 0.68;
 }
+.snapshot-preview-mask {
+  position: fixed;
+  left: 0;
+  right: 0;
+  top: 0;
+  bottom: 0;
+  z-index: 99;
+  background: rgba(0, 0, 0, 0.78);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 36rpx;
+  box-sizing: border-box;
+}
+.snapshot-preview-panel {
+  width: 100%;
+  max-width: 720rpx;
+  max-height: 88vh;
+  border-radius: 24rpx;
+  background: #111827;
+  padding: 24rpx;
+  box-sizing: border-box;
+  display: flex;
+  flex-direction: column;
+  gap: 20rpx;
+}
+.snapshot-preview-image {
+  width: 100%;
+  height: 58vh;
+  border-radius: 16rpx;
+  background: #000000;
+}
+.snapshot-preview-tip {
+  color: rgba(255, 255, 255, 0.82);
+  font-size: 24rpx;
+  line-height: 1.45;
+  text-align: center;
+}
+.snapshot-preview-actions {
+  display: flex;
+  gap: 18rpx;
+}
+.snapshot-preview-btn {
+  flex: 1;
+  height: 72rpx;
+  line-height: 72rpx;
+  border-radius: 999rpx;
+  color: #ffffff;
+  background: #2563eb;
+  font-size: 26rpx;
+}
+.snapshot-preview-btn.secondary {
+  color: rgba(255, 255, 255, 0.86);
+  background: rgba(255, 255, 255, 0.14);
+}
 .clean-video-tile :deep(.footer) {
   display: none;
 }